/**
 * @file basic_test.cpp
 * @brief 基础测试文件 - 使用标准库 assert，无外部依赖
 */

#include "app.hpp"
#include <cassert>
#include <iostream>
#include <vector>
#include <string>

/// 测试枚举转换函数
static void testEnumToString() {
    std::cout << "[TEST] 枚举转换函数..." << std::endl;

    assert(checkinMethodToString(CheckinMethod::FACE) == "人脸识别");
    assert(checkinMethodToString(CheckinMethod::GPS) == "GPS定位");
    assert(checkinMethodToString(CheckinMethod::CARD) == "工牌刷卡");

    assert(attendanceStatusToString(AttendanceStatus::NORMAL) == "正常");
    assert(attendanceStatusToString(AttendanceStatus::LATE) == "迟到");
    assert(attendanceStatusToString(AttendanceStatus::EARLY) == "早退");
    assert(attendanceStatusToString(AttendanceStatus::ABSENT) == "缺勤");
    assert(attendanceStatusToString(AttendanceStatus::OVERTIME) == "加班");

    assert(alertTypeToString(AlertType::UNCHECKED) == "未打卡");
    assert(alertTypeToString(AlertType::EARLY) == "早退预警");
    assert(alertTypeToString(AlertType::LATE) == "迟到预警");
    assert(alertTypeToString(AlertType::MISSING) == "连续缺勤");

    std::cout << "  PASS" << std::endl;
}

/// 测试记录ID生成
static void testGenerateRecordId() {
    std::cout << "[TEST] recordId生成..." << std::endl;
    std::string id1 = generateRecordId();
    std::string id2 = generateRecordId();

    assert(!id1.empty());
    assert(!id2.empty());
    assert(id1 != id2);  // 两次生成的ID应该不同
    assert(id1.substr(0, 2) == "CK");

    std::cout << "  PASS: id1=" << id1 << ", id2=" << id2 << std::endl;
}

/// 测试打卡处理
static void testProcessCheckin() {
    std::cout << "[TEST] 打卡处理..." << std::endl;

    GeoLocation loc = {39.9042, 116.4074};
    std::vector<uint8_t> face = {0x01, 0x02, 0x03};
    int64_t ts = 1700000000000LL;  // 固定时间戳

    // 人脸打卡
    CheckinRecord rec1 = processCheckin("EMP001", CheckinMethod::FACE, ts, loc, face);
    assert(rec1.employeeId == "EMP001");
    assert(rec1.status == CheckinStatus::SUCCESS);
    assert(!rec1.recordId.empty());

    // GPS打卡
    CheckinRecord rec2 = processCheckin("EMP002", CheckinMethod::GPS, ts, loc, {});
    assert(rec2.employeeId == "EMP002");
    assert(rec2.status == CheckinStatus::SUCCESS);

    // 工牌刷卡
    CheckinRecord rec3 = processCheckin("EMP003", CheckinMethod::CARD, ts, loc, {});
    assert(rec3.employeeId == "EMP003");
    assert(rec3.status == CheckinStatus::SUCCESS);

    std::cout << "  PASS: 三种打卡方式均成功" << std::endl;
}

/// 测试考勤计算
static void testCalculateAttendance() {
    std::cout << "[TEST] 考勤计算..." << std::endl;

    ShiftRule shift;
    shift.shiftName = "早班";
    shift.startHour = 9;
    shift.startMinute = 0;
    shift.endHour = 18;
    shift.endMinute = 0;
    shift.breakDuration = 60;
    shift.overtimeThreshold = 30;

    // 场景1: 准时打卡 (9:00)
    {
        struct tm tm_in = {};
        tm_in.tm_year = 2025 - 1900;
        tm_in.tm_mon = 0;
        tm_in.tm_mday = 15;
        tm_in.tm_hour = 9;
        tm_in.tm_min = 0;
        time_t sec = mktime(&tm_in);
        CheckinRecord rec;
        rec.employeeId = "EMP001";
        rec.timestamp = static_cast<int64_t>(sec) * 1000;

        AttendanceResult res = calculateAttendance(rec, shift);
        assert(res.lateMinutes == 0);
        assert(res.status == AttendanceStatus::NORMAL || res.status == AttendanceStatus::NORMAL);
    }

    // 场景2: 迟到 (9:45)
    {
        struct tm tm_in = {};
        tm_in.tm_year = 2025 - 1900;
        tm_in.tm_mon = 0;
        tm_in.tm_mday = 15;
        tm_in.tm_hour = 9;
        tm_in.tm_min = 45;
        time_t sec = mktime(&tm_in);
        CheckinRecord rec;
        rec.employeeId = "EMP002";
        rec.timestamp = static_cast<int64_t>(sec) * 1000;

        AttendanceResult res = calculateAttendance(rec, shift);
        assert(res.lateMinutes > 0);
        assert(res.status == AttendanceStatus::LATE);
    }

    std::cout << "  PASS: 正常与迟到判定正确" << std::endl;
}

/// 测试异常检测
static void testDetectAnomaly() {
    std::cout << "[TEST] 异常检测..." << std::endl;

    // 正常情况 - 不应生成预警
    {
        AttendanceResult normal;
        normal.employeeId = "EMP001";
        normal.date = "2025-01-15";
        normal.lateMinutes = 0;
        normal.absent = false;

        AlertNotification alert = detectAnomaly(normal);
        assert(alert.alertType == AlertType::UNCHECKED);
        assert(alert.reason == "正常");
    }

    // 迟到超过30分钟 - 应生成迟到预警
    {
        AttendanceResult late;
        late.employeeId = "EMP002";
        late.date = "2025-01-15";
        late.lateMinutes = 45;
        late.absent = false;

        AlertNotification alert = detectAnomaly(late);
        assert(alert.alertType == AlertType::LATE);
        assert(!alert.notifiedChannels.empty());
    }

    std::cout << "  PASS" << std::endl;
}

/// 测试报表生成
static void testGenerateReport() {
    std::cout << "[TEST] 报表生成..." << std::endl;

    ReportRequest req;
    req.dimension = ReportDimension::MONTH;
    req.startDate = "2025-01-01";
    req.endDate = "2025-01-31";
    req.format = ExportFormat::EXCEL;

    ReportResponse resp = generateReport(req);
    assert(resp.success);
    assert(!resp.reportUrl.empty());
    assert(resp.fileSize > 0);

    std::cout << "  PASS: URL=" << resp.reportUrl << std::endl;
}

/// 测试加密模块
static void testEncryption() {
    std::cout << "[TEST] 人脸特征加密..." << std::endl;

    std::vector<uint8_t> original = {0x10, 0x20, 0x30, 0x40, 0x50};
    std::vector<uint8_t> encrypted = encryptFaceFeature(original);

    assert(encrypted.size() == original.size());

    // 加密后应该与原文不同
    bool different = false;
    for (size_t i = 0; i < original.size(); i++) {
        if (encrypted[i] != original[i]) {
            different = true;
            break;
        }
    }
    assert(different);

    std::cout << "  PASS: 加密后数据已变更" << std::endl;
}

/// 主测试入口
int main() {
    std::cout << "========== 考勤系统单元测试 ==========" << std::endl;

    testEnumToString();
    testGenerateRecordId();
    testProcessCheckin();
    testCalculateAttendance();
    testDetectAnomaly();
    testGenerateReport();
    testEncryption();

    std::cout << "\n========== 所有测试通过！ ==========" << std::endl;
    return 0;
}